Pipe-coupling.



PATENTBD AUG. 7, 1906.

A.. I. MIGHBL. PPE'GOUPLING. APPLICATION FILED AUG.14. 1

muren sfrri'rns rafrnr'rr onirica.

Nebenwerte@ Specification of Letters Patent.

Patented Aug. '7, 1906.

Application iilcd August 14, 1905. Serial No. 274,133.

To all?, whom/.it may concern:

Be it known that I, ALBERT J MICHEL, a citizen of the United, States, 'residing at Scranton, in the county of Lackawanna and State-of Pennsylvania, haveinvented certain new, and useful Improvements in Pi eCouplings; and I do hereby declare the ollowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the improvements in ipe-coupling, and especially union-nuts.

t has for its object to prevent the loss of the washer from the nut and also to retain the vnut in connection with the pipe.

The invention consists in the features of construction and combinations of parts hereinafter described, and more particularly pointed out in the claim concluding this specification.

In the accompanying drawings, illustratv ing the preferred embodiment of my invention, Figure 1 is an elevation of the metallic vsleeves and nut of a hose-couplingr made in accordance with my invention, outer surface being milledforhand use. Fig, 2 is a longitudinal sectional view thereof. Fig. 3 is an end view, and Fig. 4 is a similar view, showing the sides of the nut flattened for'engagement by a wrench.

While the referred embodiment of my invention is il ustrated in the accompanying drawings and its construction and operation is described in this s ecification, the right is reserved to make suc ichanges from the construction shown and described herein as the scope of the claim hereto appended Willperinit.

Referring more particularly to the drawings, 1n carrying out my invention I may pro vide the outer surface of the union-nut l witn a milled surface 2, as shown in Fig. l,v or a flattened surface 3, as shown in Fig. 4. The

a circumferential groove 6, into which the outer edge of the washer extends, whereby it is retained in place. The washer is made larger than the opwingof the nut, so that its edge may be folded up in order to get it into the groove. When once in position, however, it straightens out flat and is not only held in place itself, but it retains the sleeve 7 in connection with the nut. It will be noted that the interior groove is wider than the thickness of the washer, so that said washer may be readily inserted while folded and afterward assume its proper position. Said ,washer extends inward flush with the bore of the sleeves 7 and 8, the latter of which is screwed into the nut until it comes in contact with the washer and presses it firmly upon the end of the sleeve 7, makingr a 'tight joint. The inner end of the sleeve 7 is reinforced, as at 7, and ,from said reinforced portion the iange 7b extends, whereby the latter is strengthened. The nut is provided'in either side of the central projecting portion, which may be milled or'flattened into a wrenchengaging surface, as described, with oppositelyextending portions l and lb, the former extending over the reinforced part of the sleeve 7 and the latter beirg,f internally screwthreaded to receive the end of the sleeve S. The inner end of said sleeve 8 has its interior diameter somewhat enlarged at S. and is reinforced at the shoulder 8b.

My invention will befound to be particularly useful and valuable when coupling up hot pipes, when the union-nut also becomes hotand it is difiicult to start on the end of the pipewithout burningr the ngers. As soon as the fingers are burned the nut will probably be released, and if the old form of nut is used it will drop off of the pi e, and' 95 the washer will fall out and probably e lost. This often occurs half a dozen times before the coupling is finally made, and then it is at the cost of burned fingers and several washers lost, not to speak of the strain upon the atience. When my nut is used with the was ier in place and the nut itself held on the end of the pipe b the washer, said nut may be raised and eld in position on the end of the pipe while it is started by a wrench.

lt will be noted that my device isvextremely simple in construction and can be so cheapl manufactured that it can be universali-'y use My coupling is especially adapted for connecting up globe-valves.

ICO

Having thus described 1nyinvention,what thickness than the width of the groove, ar- Iolaim as newfand desire to seeurebyLetters ranged with its edge extending into said Patent, is* l v groove.

A union-nut, adapted for connecting metal In testimony whereof I affix my signature 5 pi e, .having a central projecting iortion in presence of two Witnesses.

a a ted tobe-gripped -for turning en opposite y-extending portions adapted to engage ALBERT J' MICHEL' pipe ends, said nut provided With 'an interior L Witnesses:

"eircumferential' groove belowy 'said central HARRY W. PASS,

:projeoting portion., and il; Washer, of less GEO. W. SHERMAN. 

